JP2007100558A - Wind power generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a windmill starting auxiliary device startable at a low wind speed without impairing performance originally possessed by a windmill since power generation efficiency is reduced when a constitution having the device acts as a load of the windmill though a present wind power generator has occasionally the windmill starting auxiliary device for improving startablity at the low wind speed. <P>SOLUTION: This starting auxiliary device 2 comprises a starting windmill 10 coaxially connected to the upper end of a rotary shaft 9 of the windmill 1; an electric fan 11 for blowing air to the starting windmill 10; a casing 12 surrounding the periphery of the starting windmill 10; and a detecting device 13 for detecting and controlling a surrounding air velocity. In this case, reduction in the power generation efficiency of the windmill is prevented by a constitution of not mechanically connecting the electric fan 11 to the windmill 1, and starting and stopping of the electric fan 11 are controlled in response to a signal outputted in response to the air velocity detected by the detecting device 13. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a start assist device for starting a windmill at a wind speed lower than that of a conventional wind turbine generator using natural energy.

  Conventionally, as for an auxiliary starting device for starting this type of windmill at a lower wind speed than the conventional one, a configuration in which an electric motor for starting auxiliary is connected to the rotating shaft of the windmill separately from the generator is well known. (For example, refer to Patent Document 1).

In addition, a wind turbine that has a startup wind turbine that catches natural wind and generates a large startup torque at a lower wind speed than a wind turbine of a wind power generator is often used (see, for example, Patent Document 2). .
JP 2004-28071 A JP 58-1887587 A

  In such a conventional wind turbine generator, by connecting the motor for starting assistance to the rotating shaft of the windmill, the rotational torque or stationary torque of the motor for starting assistance affects when the rotating shaft of the windmill rotates. Therefore, when the wind turbine captures the natural wind and rotates independently, the rotational torque and static torque of the electric motor act as a load in the positive rotation direction of the wind turbine, thus reducing the power generation efficiency. Furthermore, in a high rotation state at a high wind speed, the rotational torque of the rotating shaft of the windmill is transmitted, the motor also rotates at a high rotation, and as a result, the back electromotive force generated from the motor becomes a high voltage. However, there is a problem that a protection device for preventing backflow is required.

  An object of the present invention is to solve such a conventional problem, and to provide a start assist device that starts a windmill at a lower wind speed than the conventional one without reducing the power generation efficiency of the wind power generator. Yes.

  In addition, in the configuration in which the wind turbine for start-up is provided side by side with the rotating shaft of the wind turbine, the wind speed at which the wind turbine can start depends on the start torque generated by the natural wind and the wind turbine bearing support structure and generator output, etc. It depends on the relationship with the torque required for starting the wind turbine to be determined.If the torque required for starting the wind turbine is large or if you want to start the wind turbine at a very low wind speed, In order to increase the generated starting torque, it is necessary to increase the size of the starting wind turbine. As a result, the size of the starter wind turbine is relatively larger than that of the wind turbine, and the wind turbine's rotation axis is affected by the mass of the starter wind turbine and the drag generated by the rotation when the wind turbine is rotating while capturing natural wind. Therefore, there is a problem that the power generation efficiency is lowered.

  The present invention solves such a conventional problem, and solves such a conventional problem without increasing the size of the wind turbine for activation. The activation of the wind turbine is lower than the conventional one. It aims at providing the starting auxiliary device started with a wind speed.

  In order to achieve the above object, a wind turbine generator according to claim 1 is a wind turbine that rotates by capturing natural wind, a generator that converts the rotational energy into electrical energy, and the generated electrical energy. In the wind power generator provided with the storage battery for storing the battery, a start assist device that does not transmit torque acting as a load in the positive rotation direction of the windmill is attached.

  By this means, the start assist device can assist the start of the windmill without transmitting torque acting as a load in the forward rotation direction of the windmill, and the power generation efficiency of the wind turbine generator does not decrease.

  A wind turbine generator according to a second aspect of the present invention is the wind turbine generator according to the first aspect of the present invention, wherein the wind turbine for start-up is provided as a start-up auxiliary device coaxially with the rotating shaft of the wind turbine as the start-up auxiliary device. And it is set as the structure of the electric fan in order to apply a wind to the said windmill for starting.

  Due to this means, in order to assist the start-up, when the electric fan is started, the start-up windmill receives wind, receives the rotational torque in the direction in which the rotating shaft of the windmill rotates normally, and the windmill rotates. However, since the electric fan and the starting windmill are not mechanically connected, the torque acting as a load in the forward rotation direction of the windmill is not transmitted regardless of whether the electric fan is started or stopped. Efficiency does not decrease.

  According to a third aspect of the present invention, there is provided a wind turbine generator according to the second aspect of the present invention, in order to achieve the above object, the direction of the wind from the outer peripheral side of the starter windmill is determined by the blade receiver of the starter windmill. The electric fan is arranged so as to coincide with the wind surface central axis.

  By this means, the wind from the electric fan can be efficiently applied to the starter windmill, so the size of the starter windmill can be reduced and the electric power for operating the electric fan can be reduced.

  A wind turbine generator according to a fourth aspect of the present invention is the wind turbine generator according to the second aspect, wherein a centrifugal impeller is used as the starter windmill to achieve the above object, and the starter windmill suction side is provided. The electric fan is arranged so that the direction of the wind is aligned with the rotation axis of the starter windmill.

  By this means, the wind from the electric fan can be uniformly and efficiently applied to all the blades arranged in the centrifugal impeller of the starter windmill, so that the rotational torque of the starter windmill generated by receiving the wind can be increased. . Therefore, it is possible to reduce the size of the startup windmill and reduce the electric power for operating the electric fan.

  The wind turbine generator according to claim 5 of the present invention is the wind turbine generator according to claims 2 to 4, wherein the electric fan is a centrifugal fan having a spiral casing in order to achieve the above object. Features.

  By this means, the specification can be made in accordance with the application in the region where the static pressure is high for the electric fan in which the wind is applied to the starter windmill, so that the electric fan can be downsized and the electric power to be operated can be reduced.

  The wind power generator according to claim 6 of the present invention is the wind power generator according to claim 1, wherein the driven auxiliary roller provided coaxially with the rotating shaft of the wind turbine is used as the start-up auxiliary device in order to achieve the object. The wind power generator according to claim 1, wherein a drive cam roller is attached to the starting motor.

  By this means, the driving cam roller and the driven roller are connected by frictional contact, but since they have a cam shape, there is a state where the driving cam roller is not connected in a phase section with one rotation of the driving cam roller. . When the drive cam roller is rotated to assist the start-up, the rotational torque is transmitted to the rotating shaft of the windmill via the driven roller in the frictional contact state, and the windmill is started. After that, when the wind speed increases and the wind turbine rotates independently, when the starter motor is stopped, the drive cam roller is temporarily driven by receiving the rotational torque of the windmill's rotating shaft, contrary to the start assist. Rotate to the side. However, when the section is not connected due to the cam shape, the rotating shaft of the windmill continues to rotate due to the wind. However, the rotational torque is not transmitted to the drive cam roller, so that the wind turbine stops without being connected. As a result, the starter motor and the rotating shaft of the windmill are not mechanically connected, and torque acting as a load in the forward rotation direction of the windmill is not transmitted, so the power generation efficiency of the wind turbine generator does not decrease.

  The wind power generator of the present invention according to claim 7 is the wind power generator according to claim 1, wherein, in order to achieve the above object, the follower provided coaxially with the rotating shaft of the windmill as the start assist device A drive roller is attached to the roller and the starter motor via a one-way clutch.

  By this means, the driving roller and the driven roller are always connected by frictional contact, but via a one-way clutch, the driving roller transmits driving force only in the direction of driving the driven roller, and idles in the reverse direction. I have a mechanism. When the drive cam roller is rotated to assist the activation, the rotational torque is transmitted to the rotating shaft of the windmill via the driven roller, and the windmill is activated. After that, when the wind speed increased and the wind turbine started to rotate independently, when the start-up auxiliary motor was stopped, the drive roller continued to rotate by the driven roller, but the start-up motor stopped by the function of the one-way clutch mechanism Will remain. As a result, the starter motor and the rotating shaft of the windmill are not mechanically connected, and torque acting as a load in the forward rotation direction of the windmill is not transmitted, so the power generation efficiency of the wind turbine generator does not decrease.

  In order to achieve the above object, the wind power generator according to the present invention described in claim 8 detects the wind speed of natural wind in order to achieve the above object. And a detection device for controlling the operation.

  By this means, the start assist device is started at the wind speed set in the range of the low wind speed in the region where the wind turbine cannot start independently, and the start assist device is activated in the region where the wind speed of the natural wind increases and the wind turbine can rotate independently. Since it can be stopped, it is possible to reduce the amount of power for operating the activation assist device.

  The wind power generator of the present invention according to claim 9 is the wind power generator according to claim 8, wherein the storage battery is used as a power source for operating the start assist device in order to achieve the object. To do.

  By this means, it is possible to cover the natural energy generated by the wind power generator without relying on the outside for the electric power for starting the windmill.

  In order to achieve the above object, the wind power generator of the present invention described in claim 10 includes a solar cell that generates power by capturing natural solar radiation, and the solar cell generates power. As a configuration for storing electric energy in the storage battery, a control circuit for starting and stopping the start-up auxiliary device by detecting the voltage of the solar battery is provided.

  By this means, since the electric power for starting the windmill can be provided by the natural energy generated by the solar battery, it is possible to start the windmill stably even if the wind is weak. Furthermore, since the start-up assistance is performed by detecting the presence or absence of sunshine by detecting the voltage of the solar battery, it is possible to suppress the use of power when the sunshine is not available, such as at night or in the rainy weather, leading to protection of the storage battery.

  According to the present invention, the start-up of the windmill is started at a lower wind speed than in the prior art without complicatedly changing the configuration of the charging circuit, and without the rotational torque of the motor for starting assistance affecting the rotating shaft of the windmill. It is possible to provide an activation assisting device that is effective.

  Moreover, the effect that a windmill can be started by arbitrary wind speeds without enlarging the dimension of the windmill for starting is also acquired.

  The invention according to claim 1 of the present invention is a wind turbine generator including a windmill that rotates by capturing natural wind, a generator that converts the rotational energy into electrical energy, and a storage battery that stores the generated electrical energy. A start assist device is provided that does not transmit torque acting as a load in the forward rotation direction of the windmill, and the start assist device does not transmit torque acting as a load in the forward rotation direction of the windmill. The wind turbine does not cause a wind energy loss due to the wind turbine operating with the start assist device as a load, and the power generation efficiency of the wind turbine generator does not decrease.

  According to a second aspect of the present invention, in the wind power generator according to the first aspect, as the start-up assisting device, a start-up wind turbine provided coaxially with a rotating shaft of the wind turbine, and a wind on the start-up wind turbine This is an electric fan configuration. For starting assistance, when the electric fan is started, the starting windmill receives wind, receives the rotational torque in the direction in which the rotating shaft of the windmill rotates forward, and the windmill rotates. . However, since the electric fan and the starting windmill are not mechanically connected, the torque acting as a load in the forward rotation direction of the windmill is not transmitted regardless of whether the electric fan is started or stopped. The effect is that the efficiency does not decrease.

  According to a third aspect of the present invention, in the wind turbine generator according to the second aspect, the electric motor is configured such that a wind direction from an outer peripheral side of the starter wind turbine coincides with a blade wind receiving surface central axis of the starter windmill. It is characterized by the arrangement of a fan, and since the wind from the electric fan can be efficiently applied to the starter windmill, the size of the starter windmill can be reduced and the power required to operate the electric fan can be reduced. Has the effect of being able to

  According to a fourth aspect of the present invention, in the wind turbine generator according to the second aspect, a centrifugal impeller is used as the starter windmill, and the direction of wind from the suction side of the starter windmill is changed to that of the starter windmill. The electric fan is arranged so as to coincide with the rotation axis, and the wind emitted from the electric fan is uniformly and efficiently applied to all the blades arranged in the centrifugal impeller of the starter windmill. Therefore, it is possible to increase the rotational torque of the starter wind turbine generated by receiving wind. Therefore, it is possible to reduce the size of the startup windmill and reduce the electric power for operating the electric fan. It has the action.

  According to a fifth aspect of the present invention, in the wind turbine generator according to the second to fourth aspects, the electric fan is a centrifugal fan having a spiral casing. Since the specification can be made in accordance with the application of the high static pressure region for the electric fan to which the wind is applied, the electric fan can be downsized and the electric power to be operated can be reduced.

  According to a sixth aspect of the present invention, in the wind turbine generator according to the first aspect, as the starting assisting device, a driven roller provided coaxially with the rotating shaft of the windmill, and a driving cam roller attached to the starting motor The drive cam roller and the driven roller are connected by frictional contact, but because of the cam shape, the drive cam roller has a phase of one rotation. There will be unconnected states. When the drive cam roller is rotated to assist the start-up, the rotational torque is transmitted to the rotating shaft of the windmill via the driven roller in the frictional contact state, and the windmill is started. After that, when the wind speed increases and the wind turbine rotates independently, when the starter motor is stopped, the drive cam roller is temporarily driven by receiving the rotational torque of the windmill's rotating shaft, contrary to the start assist. Rotate to the side. However, when the section is not connected due to the cam shape, the rotating shaft of the windmill continues to rotate due to the wind. However, the rotational torque is not transmitted to the drive cam roller, so that the wind turbine stops without being connected. As a result, the starting motor and the rotating shaft of the windmill are not mechanically connected, and torque acting as a load in the forward rotation direction of the windmill is not transmitted, so that the power generation efficiency of the wind turbine generator does not decrease. Have.

  According to a seventh aspect of the present invention, in the wind turbine generator according to the first aspect, as the starting assist device, the driven roller provided coaxially with the rotating shaft of the windmill, and a one-way clutch for the starting motor. The driving roller and the driven roller are always connected by frictional contact by this means, but the driving roller is driven by the one-way clutch. It has a mechanism that transmits driving force only in the direction of driving the roller and idles in the reverse direction. When the drive cam roller is rotated to assist the activation, the rotational torque is transmitted to the rotating shaft of the windmill via the driven roller, and the windmill is activated. After that, when the wind speed increased and the wind turbine started to rotate independently, when the start-up auxiliary motor was stopped, the drive roller continued to rotate by the driven roller, but the start-up motor stopped by the function of the one-way clutch mechanism Will remain. As a result, the starter motor and the rotating shaft of the windmill are not mechanically connected, and torque acting as a load in the forward rotation direction of the windmill is not transmitted, so that the power generation efficiency of the wind turbine generator does not decrease. Have

  The invention according to claim 8 of the present invention is the wind turbine generator according to claims 2 to 7, further comprising a detection device that detects and controls the start / stop of the start-up auxiliary device by detecting the wind speed of natural wind. The start assist device is started at the wind speed set in the low wind speed range in the area where the windmill cannot stand up and start up, and the natural wind speed increases and the windmill can rotate independently Since the apparatus can be stopped, it has the effect of reducing the amount of power for operating the activation assisting apparatus.

  The invention according to claim 9 of the present invention is characterized in that, in the wind turbine generator according to claim 8, the storage battery is used as a power source for operating the start-up auxiliary device. It has the effect that it can be covered with natural energy generated by a wind power generator without relying on the outside for power.

  The invention according to claim 10 of the present invention is the wind turbine generator according to claim 9, comprising a solar cell that generates power by capturing natural solar radiation, and the electric energy generated by the solar cell is stored in the storage battery as described above. It is characterized by having a control circuit that detects the voltage of the solar cell to start and stop the auxiliary start device, and uses the natural energy generated by the solar cell to generate power for starting the windmill. Therefore, it is possible to stably start the windmill even if the windy day continues. Furthermore, because it detects the presence of sunlight and assists startup by detecting the voltage of the solar cell, it can suppress the use of power when sunlight is not available, such as at night or in rainy weather, leading to protection of the storage battery. Have.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is an overall front sectional view of Embodiment 1 of the present invention, FIG. 2 is a front sectional view of components of an activation auxiliary device, and FIG. 3 is a system diagram.

  As shown in FIG. 1, the wind turbine 1, the start assist device 2, a generator 3 that converts the rotational energy of the wind turbine 1 into electric energy, a charging circuit 4 that stores electric power generated by the generator 3, and A storage battery 5 and a lighting device 6 that is turned on using the power stored in the storage battery 5 are provided. And the windmill 1, the starting assistance apparatus 2, the generator 3, the storage battery 5, and the illuminating device 6 are each hold | maintained at predetermined height from the ground so that it may be inserted | pinched between the two poles 7. FIG. Moreover, the pole 7 is installed on the ground by a foundation base 8, and the foundation base 8 is installed by a fixture such as an anchor bolt.

  As shown in FIG. 2, the startup assisting device 2 includes a startup windmill 10 that is coaxially connected to the upper end of the rotating shaft 9 of the windmill 1, an electric fan 11 that applies wind to the startup windmill 10, and startup The casing 12 includes a casing 12 that surrounds the wind turbine 10 and a detection device 13 that detects and controls the surrounding wind speed. The casing 12 includes an air discharge port 14. The electric fan 11 is a centrifugal fan having a spiral casing 15, and a built-in impeller is a multi-blade type, but there is no difference in operation and effect even if a turbo-type is used instead of the multi-blade type. The air outlet 16 of the spiral casing 15 is fixed to the casing 12 so as to be applied to the wind receiving surface central axis of the blade 17 of the starter wind turbine 10 so that the direction and the position of the air wind face the same. The detection device 13 uses an airflow sensor using a platinum electrode as a sensor for detecting the wind speed, and controls the start / stop of the electric fan 11 in response to a signal output from the airflow sensor according to the wind speed. It is a possible configuration. As a sensor for detecting the wind speed, even if a combination of a paddle type wind turbine and a rotary encoder is used in place of the air flow sensor using the platinum electrode, there is no difference in operation and effect.

  As shown in FIG. 3, the output of the generator 3 is connected to the storage battery 5 via the charging circuit 4. A power source for operating the electric fan 11 is taken from the storage battery 5 via the detection device 13. Since the windmill 1 starts rotating when it receives a natural wind speed of 2.5 m / s, the electric fan 11 starts when the surrounding wind speed reaches 1.0 m / s by the detection device 13 and reaches 3.0 m / s. It is assumed that the electric fan 11 is set in advance to stop when it is detected that it has reached.

  In the above configuration, when the natural wind blows and the wind speed reaches 1.0 m / s, the electric fan 11 operates, the wind comes out from the blowout port 16, the wind hits the blade 17 of the starter wind turbine 10, and the starter The windmill 10 starts to rotate. Therefore, the windmill 1 connected coaxially with the rotating shaft 9 also rotates. Thereafter, when the wind speed of the natural wind increases and reaches 2.5 m / s, the windmill 1 can rotate independently and starts to generate rotational torque, so that the starter windmill 10 only receives the wind of the electric fan 11. The number of rotations is higher than that when rotating at. Thereafter, when the wind speed further increases and reaches 3.0 m / s, the electric fan 11 stops. The windmill 1 that has already caught the wind and is rotating independently continues to rotate. In this series of operations, since the electric fan 11 and the starter wind turbine 10 are not mechanically connected, the rotational torque of the electric fan 11 is not transmitted as a load to the rotating shaft 9 of the wind turbine 1. 1 does not use the wind energy of the windmill 1 to operate the electric fan 11, no wind energy loss occurs, and the power generation efficiency does not decrease. Further, even if the wind speed further rises and the rotational speed of the windmill 1 increases remarkably, the rotational speed of the electric fan 11 is not affected by this, and thus no back electromotive force is generated.

(Embodiment 2)
FIG. 4 is a front cross-sectional view of the components of the starting auxiliary device according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, the starter wind turbine 10 is a turbo impeller, and the electric fan 11 for applying wind to the starter wind turbine 10 has an air outlet 16 disposed on the suction side of the turbo impeller. The wind direction coincides with the direction of the rotating shaft 9 of the windmill 1. The electric fan 11 has a configuration including a multi-blade impeller 26 that is a centrifugal impeller and a spiral casing 15, and includes a turbo impeller and a casing that guides a flow from the outer peripheral side of the turbo impeller toward the rotation axis. Even if it replaces with the structure which has, there is no difference in the effect | action and effect. As a result, since the wind from the electric fan 11 can be uniformly and efficiently applied to all the blades 29 of the starter wind turbine 10, the size of the starter windmill 10 can be reduced, and the electric power for operating the electric fan 11 can be reduced. Can be reduced.

(Embodiment 3)
FIG. 5 is a front cross-sectional view of the components of the starting auxiliary device according to Embodiment 3 of the present invention. FIG. 6 is a plan view showing a connected state of the driving cam roller and the driven roller. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, a driven roller 21 that is coaxially connected to the upper end of the rotating shaft 9 of the windmill 1 and a driving cam roller 23 are attached to the starting motor 22, and the driven roller 21 and the driving cam roller 23 are in frictional contact. Are arranged to be.

  Since the drive cam roller 23 has a cam shape in the direction orthogonal to the rotation axis, the drive cam roller 23 does not make frictional contact with the driven roller 21 in a phase of one rotation of the drive cam roller 23. One rotating shaft 9 is not connected. The contact surfaces of the driven roller 21 and the drive cam roller 23 are both covered with urethane rubber, so that the frictional contact works properly even if the force pressing the rollers is small, and the roller can be activated even when it is stationary. The state where it does not slip is maintained. Although it is a material for the roller surface, even if fluorine rubber, chloroprene rubber, or nitrile rubber is used instead of urethane rubber, it has the same characteristics as urethane rubber in terms of wear resistance, so there is a difference in its action and effect. Does not occur.

  In the above configuration, as shown in FIG. 6, when the starting motor 22 is started to assist the starting and the driving cam roller 23 is rotated, the rotational torque passes through the driven roller 21 in the frictional contact state. Then, the wind turbine is activated by being transmitted to the rotating shaft 9 of the wind turbine 1. After that, when the wind speed of the natural wind increases and the wind turbine 1 is in a state of rotating independently, when the starter motor 22 is stopped, the driving cam receives the rotational torque of the rotating shaft 9 of the windmill 1 contrary to the start assist. The roller 23 temporarily rotates with the driven side. However, if the camshaft is not connected due to the cam shape, the rotating shaft 9 of the windmill 1 continues to rotate due to the wind. However, since rotational torque is not transmitted to the drive cam roller 23, the rotating shaft 9 stops without being connected. As a result, the starter motor 22 and the rotating shaft 9 of the windmill 1 are not mechanically connected, and torque acting as a load in the forward rotation direction of the windmill 1 is not transmitted, so that the power generation efficiency of the wind turbine generator is reduced. do not do.

(Embodiment 4)
FIG. 7 is a front cross-sectional view of the components of the starting auxiliary device according to Embodiment 4 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 6, a driven roller 21 provided coaxially with the rotating shaft 9 of the windmill 1 and a driving roller 25 attached to the starting motor 22 via a one-way clutch 24. The driving roller 25 and the driven roller 21 is always connected by frictional contact. However, due to the action via the one-way clutch 24, the driving roller 25 transmits a driving force only in the direction in which the driven roller 21 is driven, and has a mechanism that idles in the opposite direction. The material of the roller contact surface is the same as that shown in the third embodiment. Further, as a power transmission means between the starting motor 22 and the rotating shaft 9 of the windmill 1, a friction type roller is used. Instead, a belt pulley, a timing belt pulley, a gear, and a chain are used. However, there is no difference in the action and effect.

  In the above configuration, when the starter motor 22 is started to assist start, the driving roller 25 rotates, and the rotational torque is transmitted to the rotating shaft 9 of the windmill 1 via the driven roller 21 to start the windmill 1. After that, when the wind speed increases and the wind turbine 1 starts to rotate independently, when the starter motor 22 is stopped, the drive roller 25 continues to rotate by the driven roller 21, but is activated by the mechanism of the one-way clutch 24. The electric motor 22 remains stopped. As a result, the starter motor 22 and the rotating shaft 9 of the windmill 1 are not mechanically connected, and torque acting as a load in the forward rotation direction of the windmill 1 is not transmitted. Therefore, the power generation efficiency of the wind turbine generator is It will not decline.

(Embodiment 5)
FIG. 8 is a system diagram according to Embodiment 5 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, the output of the solar cell 31 is connected to the charging circuit 4 via a control circuit 32 that detects the voltage. The power source for operating the electric fan 11 is taken from the storage battery 5 after passing through the detection device 13 from the control circuit 32. The control circuit 32 can be arbitrarily set, but is assumed to be set to supply power to the electric fan 11 when the solar battery 31 is boosted to a voltage at which the storage battery 5 can be charged. . Thereby, the electric fan 11 can be operated only in the daytime when the solar radiation is sufficient and when the wind speed is 1.0 m / s to 3.0 m / s. In order to suppress the use of electricity during rainy nights and the like while maintaining the amount of electricity stored by the power generation of the solar battery 31, not only the windmill 1 can be started stably even if the windy day continues, but the storage battery 5 It also leads to protection.

  The present invention relates to a start assist device that starts a windmill at a lower wind speed than a conventional wind power generator that generates power by capturing natural wind. However, the present invention can also be applied to a power generator that generates power using a water flow or other fluid. . Moreover, it is applicable also when converting rotational energy into other energy instead of electrical energy.

Front sectional view of Embodiment 1 of the present invention Front sectional drawing of the component of the auxiliary device for starting of Embodiment 1 of this invention System diagram of Embodiment 1 of the present invention Front sectional drawing of the component of the auxiliary device for starting of Embodiment 2 of this invention Front sectional drawing of the component of the auxiliary device for starting of Embodiment 3 of this invention The top view which shows the connection state of the drive cam roller and driven roller of Embodiment 3 of this invention Front sectional drawing of the component of the auxiliary device for starting of Embodiment 4 of this invention System diagram of Embodiment 5 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Windmill 2 Start-up auxiliary device 3 Generator 4 Charging circuit 5 Storage battery 6 Illumination device 7 Pole 8 Base stand 9 Rotating shaft 10 Startup windmill 11 Electric fan 12 Casing 13 Detection device 14 Air discharge port 15 Swirl casing 16 Outlet 17 Blade 21 Follower roller 22 Starter motor 23 Drive cam roller 24 One-way clutch 25 Drive roller 31 Solar cell 32 Control circuit

Claims (10)

Acts as a load in the forward rotation direction of a wind turbine in a wind turbine that includes a wind turbine that rotates by capturing natural wind, a generator that converts the rotational energy into electrical energy, and a storage battery that stores the generated electrical energy A wind power generator comprising a starting assist device that does not transmit torque to be transmitted. 2. The wind turbine generator according to claim 1, wherein the wind turbine generator includes a wind turbine for startup provided coaxially with a rotating shaft of the wind turbine, and an electric fan that applies wind to the wind turbine for startup. 3. The wind turbine generator according to claim 2, wherein an electric fan is arranged so that the direction of wind from the outer peripheral side of the starter windmill coincides with a blade wind receiving surface central axis of the starter windmill. 3. A centrifugal impeller is used as a starter windmill, and an electric fan is arranged so that a wind direction from a suction side of the starter windmill coincides with a rotation axis of the starter windmill. Wind power generator. The wind power generator according to any one of claims 2 to 4, wherein the electric fan is a centrifugal fan having a spiral casing. 2. The wind turbine generator according to claim 1, wherein the starter assisting device includes a driven roller provided coaxially with the rotating shaft of the windmill, and a drive cam roller attached to the starting motor. The wind power generator according to claim 1, wherein the starter assisting device includes a driven roller provided coaxially with a rotating shaft of the windmill, and a driving roller attached to the starting motor via a one-way clutch. The wind power generator according to any one of claims 2 to 7, further comprising a detection device that detects and controls a wind speed of natural wind to start and stop the start assist device. 9. The wind turbine generator according to claim 8, wherein a storage battery is used as a power source for operating the start assist device. A solar cell that generates power by capturing natural solar radiation, a storage battery for the electric energy generated by the solar cell, and a control circuit that starts and stops the start-up auxiliary device by detecting the voltage of the solar cell The wind power generator according to claim 9.

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